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Takarada Lab
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The lab studies how the brain and nerves work when a person exerts maximal force.
AboutAbout the lab
How the brain shapes the limits of force.
The Takarada Lab studies how the brain and nerves work when a person produces force.
The lab investigates how far the brain's activity can change the maximum muscle force a person can exert voluntarily.
It uses muscle contractions with blood flow restricted in the arms or legs, shouts, and words presented without the person's awareness as clues.
Using methods such as transcranial magnetic stimulation, the lab measures the state of the brain while force is produced.
Key terms
- Maximal voluntary contraction force
- The greatest muscle force a person can produce by their own will
- Blood flow restriction
- A method in which the base of an arm or leg is tightened to reduce blood flow while the muscles are put to work
- Transcranial magnetic stimulation
- A method that stimulates the brain magnetically from outside the head to examine the function of the areas that send motor commands
NewsLab news
View More ↗ResearchResearch themes
The lab investigates how the brain and nerves work when a person exerts maximal force, and what limits that force. Using muscle contractions under restricted blood flow and verbal motivation as clues, it measures changes in how force is produced and perceived.
*Illustrative imageMaximal voluntary contraction force and the brain
The lab investigates how the maximum force a person can produce voluntarily is determined by the activity of the cerebrum and spinal cord, which control movement, and explores ways to draw out that force.
*Illustrative imageMuscle contractions under restricted blood flow
When muscles work with blood flow to the arms or legs restricted, people sometimes feel they are exerting more force than they actually are. The lab explains this phenomenon in terms of inhibition of the motor system.
*Illustrative imageMotivation that works without awareness
When words are shown or shouts are given without the person being aware of it, the force produced during sustained maximal effort changes. The lab investigates this process in terms of the state of the motor system.
MembersFaculty
- ProfessorYudai Takarada
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Precentral gyrus - lateral view” Anatomography / CC BY-SA 2.1 jp (cropped)
- Maximal voluntary contraction force and the brain: “Biceps brachii muscle06” Anatomography / CC BY-SA 2.1 jp (cropped)
- Muscle contractions under restricted blood flow: “Aneroid Sphygmomanometer” Confidence24 / CC BY-SA 4.0 (cropped)
- Motivation that works without awareness: “Metal movable type” Willi Heidelbach / CC BY 2.5 (cropped)
- Related lab (Nobuhiro Nakamura Lab): “Diseased Blood Vessel Model ( )” The U.S. Food and Drug Administration / Public domain (cropped)
- Related lab (Miyamoto Lab): “Tendon - intermed mag” Nephron / CC BY-SA 3.0 (cropped)
- Related lab (Miyachi Lab): “Footprints on the snow road - 1” KKPCW / CC BY-SA 4.0 (cropped)
- Related lab (Maeda Lab): “Elastic artery seen in a histological section” Otávio Astor Vaz Costa / CC BY 4.0 (cropped)
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